Engineered to provide stable and continuous performance, performance guaranteed to 200MHz, TRUMark print legend contains footage marking from 1000' to 0', Third party verified for guaranteed performance, Made in the U.S.A. Engineered to provide stable and continuous performance, performance guaranteed to 200MHz, TRUMark print legend contains footage marking from 1000' to 0', Third party verified for guaranteed performance, Made in the U.S.A. (1)special featuresEngineered+to+provide+stable+and+continuous+performance%2C+performance+guaranteed+to+200MHz%2C+TRUMark+print+legend+contains+footage+marking+from+1000%27+to+0%27%2C+Third+party+verified+for+guaranteed+performance%2C+Made+in+the+U.S.A.+